Aim 3: To acquire EEG data and to analyze it quantitatively. Quantitative EEG Hypothesis: Both interhemispheric and intrahemispheric coherence measures of the EEG will be significantly deviant from those in the normal sample and predicted by abnormalities of ERPs. In addition, EEG background alpha activity will show post mature (i.e. higher) frequencies (Hz) than would be expected for age and focal epileptiform activity and slowing (i.e. paroxysmal theta) will predict dysfunction on the ERPs.